LEKSTROOM
Pulltest
Winches
1999/1-2
LEKSTROOM
Introduction
By order of Lekstroom Transport B.V. a testing program has been carried out in their
own workshop in order to test the modifications on the winches 1999/1 and 1999/2
since these winches were modified in 1999 by the maintenance staff of Lekstroom
Transport from electric drive to hydraulic drive.
A choice has been made for the mounting of 350 metres long wires and an SWL of
110 Kn and consequently the hydraulic system has been adapted to a working
pressure of 134 Bar. This was necessary in connection with the needed pull, the
length of the wires and the rope speed.
In order to be able to use the winches in case a higher pull force might be necessary,
new wires have been mounted on 29-8-2001 which have an SWL of 175 Kn and a
length of 275 metres and the hydraulic system has been adapted to a maximum
working force of 210 Bar.
General
The test has been carried out in Lekkerkerk on 29th August 2001 at 16.00 hours.
The winches were welded on the pontoon “Liesbeth” and the test was attended by
the following companies.
Company name
Attending
Function
Lekstroom Transport BV
Mr. P. Eerland
Owner
Endenburg - Gouda
Mr. A. Goedegebuur
Independent surveyor
Habeco Hydrauliek
Mr. P. v/d Graaf
Engineer
Data Winches
Length:
Width:
Height:
1,20 m
2,43 m
1,20 mtr
2,43 mtr
1,42 mtr
1,42 m
Capacity: Main drum 175 Kn
Second drum 30 Kn
Electric Engine 1 5 , 0
RPM
Kw, 1440
Lekstroom Transport BV, Opperduit 73a, 2941 AS Lekkerkerk
T +31180661305, F +31180664086 E [email protected]
LEKSTROOM
Hydraulic Pump
Hydraulic Engine:
Gearbox
max slag volume 61,9 cc/rot.
max pressure 207 Bar (continu)
241 Bar (10% ID of 6 sec.)
slag volume 82 cc/rot.
Max N = 730 o/min (continu)
910 o/min (continu)
1:273
Test
Test setup
The winches were welded on deck of a pontoon; two slings were attached to the
bollards and attached with a 25 Kn lock to a calibrated weight indicator. On this
indicator a “polyprop” wire was attached and at this end the winch wire.
Procedure
The winches have been tested in three runs at 100 Bar, 150 Bar and 210 Bar on
“double work” on the bottom of the winch and three runs on top of the winch with 275
metres wire at “single work”. The factor for “double work” is 4,2
Results
The results of the three runs (force) have been averaged for each combination.
Lekstroom Transport BV, Opperduit 73a, 2941 AS Lekkerkerk
T +31180661305, F +31180664086 E [email protected]
LEKSTROOM
Winch
Pressure [Bar]
Force [Kn]
1999/1
100
90 ,0
150
136,3
210
188,4
Force [Kn]
Calculated
1999/2
150
19,3
81,06
100
29
121,8
210
38,4
161,3
Lekstroom Transport BV, Opperduit 73a, 2941 AS Lekkerkerk
T +31180661305, F +31180664086 E [email protected]
LEKSTROOM
Conclusion
After the test the winches have been visually checked for damage and no damage had
been appeared on both the winches. They are ready for use up to 161,3 Kn
Lekkerkerk, 29th August 2001
Lekstroom Transport BV
Mr. P.Eerland
Endenburg - Gouda
Mr. A. Goedegebuur
Lekstroom Transport BV, Opperduit 73a, 2941 AS Lekkerkerk
T +31180661305, F +31180664086 E [email protected]
LEKSTROOM
Test results
1999/2
Pressure
100 Bar
150 Bar
210 Bar
Force
1
90,0 Kn
2
90,0 Kn
3
90,0 Kn
RESULT
270,0 / 3 = 90,0 Kn
1
136,0 Kn
2
136,0 Kn
3
137,0 Kn
RESULT
409,0 Kn / 3 = 136,3 Kn
1
190,0 Kn
2
187,7 Kn
3
187,9 Kn
RESULT
564,4 Kn / 3 = 188,4 Kn
1999/1
Pressure
100 Bar
150 Bar
210 Bar
Force
1
18,0 Kn
2
20,0 Kn
3
20,0 Kn
RESULT
58,0 / 3 = 19,3 Kn
1
29,0 Kn
2
30,2 Kn
3
28,0 Kn
RESULT
87,2 Kn / 3 = 29,0 Kn
1
35,0 Kn
2
40,0 Kn
3
40,1 Kn
RESULT
115,1 Kn / 3 = 38,4 Kn
Lekstroom Transport BV, Opperduit 73a, 2941 AS Lekkerkerk
T +31180661305, F +31180664086 E [email protected]